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Showing: 1 to 10 of 297 matches for "Jack Leg Drill"  Page   1   2   3   4   5   6   7   8   9  next TITLE The use of modified handles on jack-leg drills to reduce hand vibration  SUMMARY ... used for the evaluation of the handles; the field testing programme used to monitor the hand-transmitted vibration levels produced by a jack-leg drill; and a ... AUTHOR de Souza, E.M. ; Moore, T.N. PUBLISHED 1991 TITLE Interstate Route H-3 Alternative Dowel Testing Program  SUMMARY ... 125 DRILLING EQUIPMENT All holes were percussion drilled with a Gardner-Denver jack leg drill. The drill was driven by air pressure with a S83F hammer. ... AUTHOR Boyce, Glenn M. ; Abramson, Lee W. PUBLISHED 1991 TITLE Rapid Excavation - A Perpetual Goal  SUMMARY ... of jack-leg drills was accelerated when miners recog- nized that it was easier to complete drill rounds with the lightweight jack-leg drill than with ... AUTHOR Garfield, Lawrence A. PUBLISHED 1971 TITLE Assessment Of Equipment Operators? Noise Exposure In Western Underground Gold And Silver Mines - Preprint 09-073  SUMMARY ... 873%. Time-motion data showed that this miner’s exposure accumulated most rapidly while operating a jack-leg drill. These results ... AUTHOR Spencer, E. R. PUBLISHED 2009 TITLE Field Performance Evaluation Of A Rock Drill Handle Design  SUMMARY ... A qualitative assessment of the cushioned handles by the drill operators indicated an ... The concept of the motorcycle grip to control the jack leg air pressure ... AUTHOR De Souza, E. M. ; Moore, T. N. PUBLISHED 1994 TITLE Development of a New Roof Bolt Technology to Improve Gate- Road Performance  SUMMARY ... Hilti worked with key customers to develop innovative products such as the TE MD 20 electric jack-leg drill, the OneStep roof bolt, and the permissible DX460 ... AUTHOR Caggiano, Vince PUBLISHED 2005 TITLE A technique for estimating the sound power level radiated by pneumatic rock drills and the evaluation of a CSIR prototype rock drill with engineering noise controls ? Synopsis  SUMMARY ... conducted. The parametres that were varied for the jack leg drill consisted of thrust pressure and water flow rate. The factory ... AUTHOR Kovalchik, P. G. PUBLISHED 2009 TITLE A technique for estimating the sound power level radiated by pneumatic rock drills and the evaluation of a CSIR prototype rock drill with engineering noise controls - Synopsis  SUMMARY ... conducted. The parametres that were varied for the jack leg drill consisted of thrust pressure and water flow rate. The factory ... AUTHOR Kovalchik, P. G. PUBLISHED 2009 TITLE Performance of Grouting Programin Cambridge Argillite at Inter-Island Tunnel  SUMMARY ... The primary drilling equipment to advance individual grout holes included a jack leg. A single boom Atlas Copco drill jumbo (Figure 4) was also utilized for ... AUTHOR Page, Troy L. ; Crouthamel, David R. ; Fong, Francis L. PUBLISHED 1997 TITLE How New Trackless Mining Equipment Improved Costs At Minerva's Underground Fluorspar And Zinc Mining Operations - Introduction  SUMMARY ... One or two feed leg (jack leg) drills were in ) i ... Exhaustive tests and time studies resulted in the selection of the new Gardner-Denver drill jumbo unit as ... AUTHOR Chapman, Robert T. PUBLISHED 1966 Showing: 1 to 10 of 297 matches for "Jack Leg Drill"  Page   1   2   3   4   5   6   7   8   9  next Search Again